Global Patent Index - EP 2732155 B1

EP 2732155 B1 20150610 - POWER GENERATING APPARATUS OF A RENEWABLE ENERGY TYPE HAVING HYDRAULIC PUMP ALSO OPERABLE IN MOTORING MODE

Title (en)

POWER GENERATING APPARATUS OF A RENEWABLE ENERGY TYPE HAVING HYDRAULIC PUMP ALSO OPERABLE IN MOTORING MODE

Title (de)

VORRICHTUNG ZUR STROMERZEUGUNG ÜBER ERNEUERBARE ENERGIE MIT EINER AUCH IN EINEM MOTORMODUS BETREIBBAREN HYDRAULIKPUMPE

Title (fr)

APPAREIL GÉNÉRATEUR D'ÉLECTRICITÉ UTILISANT UN TYPE D'ÉNERGIE RENOUVELABLE, POURVU D'UNE POMPE HYDRAULIQUE POUVANT AUSSI FONCTIONNER EN MODE D'ENTRAÎNEMENT

Publication

EP 2732155 B1 20150610 (EN)

Application

EP 12778453 A 20121004

Priority

JP 2012006384 W 20121004

Abstract (en)

[origin: WO2014054072A1] In a wind turbine generator or other power generating apparatus of a renewable energy type, a hydraulic pump is driven by a rotor through a drive shaft. The hydraulic pump has electronically controlled low pressure valves and primary high pressure valves which are check valves that cannot open against a pressure differential. The hydraulic pump further includes auxiliary high pressure valves which can be used in alternative motoring mode, to slowly rotate the drive shaft and rotor in the opposite direction to during normal pumping in a cycle in which low pressure valves are selectively closed at around top dead centre and the high pressure valves are opened where required to drive rotation. Thus a motoring facility can be provided, for example to enable the blade of a wind turbine generator to be positioned as required for maintenance, without compromising the efficiency or long term reliability of the pump.

IPC 8 full level

F03D 9/00 (2006.01); F03D 11/02 (2006.01)

CPC (source: EP US)

F03D 9/28 (2016.05 - EP US); F03D 15/00 (2016.05 - EP); F05B 2260/406 (2013.01 - EP); F05B 2260/506 (2013.01 - EP); Y02E 10/72 (2013.01 - EP); Y02P 80/10 (2015.11 - EP)

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DOCDB simple family (publication)

WO 2014054072 A1 20140410; EP 2732155 A1 20140521; EP 2732155 B1 20150610; JP 2014532134 A 20141204; JP 5818967 B2 20151118

DOCDB simple family (application)

JP 2012006384 W 20121004; EP 12778453 A 20121004; JP 2014504876 A 20121004